<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>
<body>
  <ul id="list"></ul>
  <script>
    var arr = [
      { "name": "小明", "age": 12, "sex": "男" },
      { "name": "小红", "age": 11, "sex": "女" },
      { "name": "小强", "age": 13, "sex": "男" }
    ]

    var list = document.getElementById('list')

    for (let i = 0; i < arr.length; i++) {
      list.innerHTML += [
        '<li>',
        '  <div class="hd">',
        '    ' + arr[i].name + '的信息',
        '  </div>',
        '  <div class="bd">',
        '    <p>姓名：' + arr[i].name + '</p>',
        '    <p>年龄：' + arr[i].age + '</p>',
        '    <p>性别：' + arr[i].sex + '</p>',
        '  </div>',
        '</li>'
      ].join('')
    }
  </script>
</body>
</html>